Combined rotary unit



April 21, 1925.

F. KAUTER f COMBINED ROTARY UNIT Filed April 11, 1922 Patented Apr. 2l, 1925.

UNITED 'STATES FRANZ KAUTER, F ZURICH, SWITZERLAND.

COMBINED ROTARY UNIT.

Application led April' 11, 1922. Serial No. 551,708.

To all whom t may concern:

Be it known that I, FRANZ KAUTER, a citizen of the Republic of Switzerland, residing at Zurich, Switzerland, have invented certain new and useful Improvements in Combined Rotary Units, of which the following is a specification, reference being had therein to the accompanying drawing.

The present invention relates to improvements in combined rotary units in which a driving rotor of one vmachine is adapted to act as the driven member of the other machine.

The invention consists in a fluid rotor composed of two tubular members, arranged for cooperation and preferably having blades in one member for fluid and guide blades ii'the other member. -There is a rotor for an electric machine directly mounted on one or both tubular members and a stator surrounding the rotor.

Several constructional examples of the object of the present invention are shown on the accompanying drawings, in which:

Fig. 1 illustrates a combination consisting of a centrifugal pump or compressor and an electric motor;

Fig. 2 `is a screw-pump and an electromotor.

In the constructional example illustrated in Fig. 1, 1 denotes the fluid rotor of a centrifugal pump, which is j'ournalled in the bearings 3a. To enable the assembling and dismantling of the combination the fluid rotor 1l is made of two members rigidly connected together by means of screws 1a. 4,4 den ite the rotor blades. The guide wheel 5 is stationary and is provided with guide vanes 6. On its outer side the fluid rotor 1 carries the rotor or armature winding 7 and the commutator 8, the stator 11 being provided with the winding 9 and. the

rushes 10. The electric current is supplied to the winding -9 of the stator and causes a rotation of the two-rigidly connected rotor members, whereby the liquid is drawn in at 2 and Vdelivered under pressure 'at 3. This constructionalexample may also lbe utilized as a combined electromotor-centrifugal compressor.

Furthermore the above described combination may be used as a water turbine driving a dynamo. In this case the water under the available head is sup lied` at 3 and acts on the blades 4 where y to the rotor 1 together with the winding 7 rotatwo machines to one machine affords a siml ple and compendious construction. l'

In the constructional example illustrated in Fig. 2, a screw pump is combined with an electromotor to one c ombined machine. The tube 27 having a conveying screw 28 fixed to its interior is journalled in the bearings 29 and is provided on its exterior with the armature winding 30. The electric `current is supplied to the stator Winding 31 and acts through brushes 32 and commutator 33 onto the winding 30. Thereby the tube 27 is rotated and the screwz 28 conveys liquid, paste or the like from 2 to 34 denotes stuliing boxes. As the screw 28 and the tube 27 are rigidly connected a silent working is attained and the losses originating in the gap-between screw and screw casingin `the ordinary type screw` pumps are avoided.

Thus machines of this type can be obtained'by the combination of centrifugal pumps, centrifugal compressors, ventilators,

screw pumps, electric generators etc. with steam-turbines, water-turbines, gas-turbines, electromotor, engines Worked by compressed air and the like. Furthermore a belt pulley,'toothed wheel or the like or a further machine may be arranged on the rotor of the device. In this manner combined units maybe built which are of a solid and simple design, which require a very small space, and which can be built at very low costs as many details such as couplings, bearings,

shafts, casings can at least to some extent I be dispensed with.

I claim:

l. The combination with the electrical- 'parts of an electric motor including a stator, a stator frame and a rotor wlthln said stator; of a pump caslng concentric with and forming part of said rotor, tubular ex` ably mounted, and a blade for fluid Within said pump casing, the tubular extensions having a length relatively to the width of 10 the electrical parts of said rotor that any leakage water splashed by centrifugal action clears said electrical parts.

In testimony whereof I aix my signa- FRANZ KAUTER.

ture. 

